If the same condition is described as both acute $($subacute$)$ and chronic, and separate subentries exist in the Alphabetic Index at the same indentation level, what would you do$?$

a$.$

code both and sequence the acute $($subacute$)$ code first

b$.$

assign the code for only the acute condition

c$.$

assign the code for only the chronic condition

d$.$

code both and sequence the chronic code first